Similarly to how discovery of file types support is implemented,
it runs a specific search on marketplace to find appropriate
solutions to satisfy a missing nature. More precisely, it expects
the solutions defining a nature to add a
`nature_<fully.qualified.nature.id>` tag.
The only real-life example declaring such tag on their marketplace
extension so far is JDT.

We need to get this list raising to deliver higher value to
end-users.
So first, if you're the owner of a marketplace solution defining a
nature, please add the `nature_<fully.qualified.nature.id>`
tag.
Then, could we prepare a general mailing to all marketplace
contributors like it was done for the `fileExtension_...` tag and
discovery? What's the best way to collaborate on that? A dedicated
bug?